The first thoughts that come to my mind, You should not be tugging on the rotor like that and you should not have the watch running while you have the case back off. Let me ask you these questions.... When you wear the watch is the rotor keeping it charged? When you first pick up the watch and shake it does the watch start running on its own or do you have to manually wind it? That's a lower end movement in that watch so there's probably nothing worthwhile to be done to it if it's functioning as expected. remember the tolerances that the Chinese build things to is not as exact as your Swiss counterpart. Good enough is a term that could often be applied to the level of workmanship in replicas.